Federal Aviation Administration March 19, 2012 – Federal Register Recent Federal Regulation Documents

Airworthiness Directives; Pratt & Whitney Turbofan Engines
Document Number: 2012-6504
Type: Rule
Date: 2012-03-19
Agency: Federal Aviation Administration, Department of Transportation
We are superseding an existing airworthiness directive (AD) for all Pratt & Whitney (PW) JT9D series turbofan engines. That AD currently requires revisions to the Airworthiness Limitations Section (ALS) of the manufacturer's Instructions for Continued Airworthiness (ICA) to include required enhanced inspection of selected critical life-limited parts at each piece-part opportunity. This new AD requires additional revisions to the JT9D series engines ALS sections of the manufacturer's ICA. This AD was prompted by the need to require enhanced inspection of selected critical life-limited parts of JT9D series engines. We are issuing this AD to prevent critical life-limited rotating engine part failure, which could result in an uncontained engine failure and damage to the airplane.
Airworthiness Directives; Alpha Aviation Concept Limited (Type Certificate Previously Held by Alpha Aviation Design Limited) Airplanes
Document Number: 2012-6440
Type: Proposed Rule
Date: 2012-03-19
Agency: Federal Aviation Administration, Department of Transportation
We propose to adopt a new airworthiness directive (AD) for Alpha Aviation Concept Limited Model R2160 airplanes. This proposed AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as oil lines fitted to affected aircraft are not fire resistant. We are issuing this proposed AD to require actions to address the unsafe condition on these products.